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/sˈɪgnəl/ Listen

Signal

noun

Any nonverbal action or gesture that encodes a message. Synonyms: sign, signaling.

Any incitement to action. "The victory was a signal for wild celebration"

An electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes.

verb

(past & past part. signaled or signalled; pres. part. signaling or signalling)

Communicate silently and non-verbally by signals or signs. Synonyms: sign, signalise, signalize. "The diner signaled the waiters to bring the menu"

Be a signal for or a symptom of. Synonyms: bespeak, betoken, indicate, point. "Her behavior points to a severe neurosis" , "The economic indicators signal that the euro is undervalued"

adjective

Notably out of the ordinary.

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"Signal" Quotes from Famous Books

... do his duty," is the new rendering of Nelson's Trafalgar signal which is being flagged throughout the country today. Lloyd George has issued an appeal to organized labor to come forward within the next seven days in a last supreme effort on behalf of the voluntary system, and if it fails nothing ...

— New York Times Current History; The European War, Vol 2, No. 5, August, 1915 • Various

... Udalrich of Halberstadt of his bishopric, a restitution that had been provided for in the treaty of Venice, gave the signal for the conflict. Henry the Lion refused to restore certain fiefs which, as Udalrich asserted, belonged to the Halberstadt Church. Archbishop Philip of Cologne and others came forward ...

— The Great Events by Famous Historians, Volume VI. • Various

... lined up at the starting point while the starter stood off to one side to give the signal and another man was posted at the farther ...

— Chicken Little Jane • Lily Munsell Ritchie

... further danger, he packed up all the treasures of the castle into great chests, and gave his brothers a signal to pull them up out of the abyss. First the treasures were attached to the rope and then the three lovely girls. And now everything was up above and only he himself remained below. But as he was a little suspicious of his brothers, he fastened a heavy ...

— The Yellow Fairy Book • Leonora Blanche Alleyne Lang

... It was the signal for the rest to follow his example. They crowded about their champion, thrusting grimy paws into his hand, ...

— That Lass O' Lowrie's - 1877 • Frances Hodgson Burnett

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